The effect of different synchronization methods on fertility in Kıvırcık sheep in anoestrus period

Year 2021, Volume: 34 Issue: 2, 255 - 260, 02.08.2021

Yağmur Duymaz Mehmet Koyuncu

https://doi.org/10.29136/mediterranean.868060

Cited By: 1

Abstract

In this study, the effect of different synchronization applications on fertility in sheep was evaluated. One hundred twenty Kıvırcık ewes were randomly allocated into five experimental groups as four treatments and one control group. In group Ӏ, the ewes were subcutaneously implanted with Regulin containing 18 mg of melatonin with a special ear implant applicator. The ewes in group II, CIDR (Controlled Internal Drug Release) were inserted into vagina and removed after 12 days. Then 500 IU PMSG (Pregnant Mare Serum Gonadotropin) was injected intramuscularly to each ewe. The ewes in group III; 20 mg flugeston acetate progestogen sponges were administered intravaginally for 14 days with intramuscular administration of 500 IU PMSG at withdrawal time. The ewes in group IV, was injected subcutaneously with PGF2α (prostaglandin F2α) (3cc) in two doses with an interval of 11 days. The ewes in group V, no hormone treatment was applied and therefore evaluated as the control group. The results in the treatment and control groups, were 80%, 95%, 88%, 92% and 76% for lambing rates; 15.0%, 26.3%, 13.6%, 4.3% and 5.3% for multiple birth rates; 0.8, 1.2, 0.96, 0.96 and 0.80 for fecundity; 1.0, 1.3, 1.2, 1.0 and 1.0 for litter size; 88%, 96%, 96%, 96% and 90% for survival rates, respectively. Gestation productivity, gestation efficiency, total productivity and overall efficiency values were found to 453 kg, 7.9 kg, 2279 kg and 40 kg respectively in the herd. Among the methods applied, it has been observed that a more efficient synchronization can be achieved with the CIDR application compared to the others.

Keywords

Sheep, Synchronization methods, Fertility, Survival rate

Kıvırcık koyunlarında anöstrus döneminde farklı senkronizasyon yöntemlerinin döl verimi üzerine etkisi

Abstract

Bu araştırmada farklı senkronizasyon uygulamalarının koyunlarda döl verimi üzerine etkisi değerlendirilmiş ve 120 baş Kıvırcık koyun rastgele 4 uygulama ve 1 kontrol grubu olmak üzere 5 gruba ayrılmıştır. Ӏ. grup koyunlarda 18 mg melatonin içeren Regülin implantı özel aplikatörü ile kulak arkası deri altına uygulanmıştır. ӀӀ. gruba CIDR (Controlled Internal Drug Release) aparatı intravajinal olarak 12 süreyle yerleştirilmiş ve çıkarıldığı gün koyun başına 500 I.U. GKSH (Gebe Kısrak Serum Hormonu) kas içi olarak uygulanmıştır. ӀӀӀ. gruba 20 mg flugeston asetat emdirilmiş süngerler 14 gün süreyle intravajinal olarak yerleştirilmiş ve çıkarıldığı gün koyun başına 500 IU GKSH kas içi olarak uygulanmıştır. IV. gruba 11 gün ara ile iki doz halinde deri altına PGF2α (prostaglandin F2α) (3cc) enjeksiyonu uygulanmıştır. V. grupta ise herhangi bir uygulama yapılmamış kontrol grubu olarak değerlendirilmiştir. I., II., III., IV. ve V. grupta sırasıyla kuzulama oranı; %80, %95, %88, %92 ve %76; çoğuz doğum oranı; %15.0, %26.3, %13.6, %4.3 ve %5.3; KKBDKS; 0.8, 1.2, 0.96, 0.96 ve 0.80 DKBDKS; 1.0, 1.3, 1.2, 1.0 ve 1.0, yaşama gücü; %88, %96, %96, %96 ve %90 olarak tespit edilmiştir. Gebelik üretkenliği, gebelik etkinliği, toplam üretkenlik ve toplam etkinlik değerleri ise sürü genelinde sırasıyla; 453 kg, 7.9 kg, 2279 kg ve 40 kg olarak bulunmuştur. Uygulanan yöntemler içinde CIDR uygulaması ile diğerlerine göre daha verimli bir senkronizasyon elde edilebileceği görülmüştür.

Keywords

Koyun, Senkronizasyon yöntemleri, Döl verimi, Yaşama gücü

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